JPH0246724Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to footwear, primarily to a shape retainer for injection molded shoes.

[Prior art]

Shape-retaining devices such as pads made from processed paperboard or blow molding are used as shape-retaining devices during the transportation and storage (distribution stage) of injection-molded shoes and the like.
Among these, there is a so-called long-length object disclosed in Japanese Utility Model Publication No. 53-343 as a shape-retaining device for footwear that can maintain the shape of footwear from the toe to the heel. That is, as shown in FIGS. 4 and 5, this long part is continuous with the front shape-retaining part, which is curveable and has an appropriate shape such as a semicircular shape, trapezoid shape, or polygonal shape, and the rear end thereof, and is connected to the heel of the footwear. A rear shape-retaining part with a length that reaches the length of the rear shape-retaining part is integrally formed with a plate-like plate, and a notch is made on both sides of the center of the boundary between the front and rear shape-retaining parts, and a cut is made on both sides of the center of the rear shape-retaining part. A shape-retaining device for footwear that has crease cuts such as perforations or slits extending in the front-rear direction to make it bendable, and further bends both outer sides of the crease cuts downward to form back and side parts. and
The entire device is made of a single plate made of cardboard, synthetic resin sheet, etc., and is widely used as a shape-retaining device for footwear that is easy to put on and take off, easy to manufacture, and has excellent shape-retaining effects.

[Problem that the invention seeks to solve]

However, since the above-described shape-retaining device for footwear has a structure that retains the shape of the heel, it closes the center of the heel, so when maintaining the shape of the side of the shoe opening, a gap is created, as shown in Figure 6. It was causing deformation. Due to the deformation of the side surface of the shoe opening, there were disadvantages such as difficulty in smoothly inserting the footwear when wearing the shoe, and a decrease in the commercial value of the footwear.

An object of the present invention is to provide a shape-retaining device for footwear that solves the above problems.

[Means for solving problems]

In other words, the present invention has a front shape-retaining part that is bendable and has an appropriate shape such as a semicircular, trapezoidal, or polygonal shape, and a rear shape-retaining part that is continuous to the rear end and has a length that reaches the heel of the footwear. is formed integrally with a plate-shaped body, leaving the center of the boundary between the front and rear shape-retention parts, making incisions on both sides, and inserting a rear shape-retention part on both sides of the center of the toe side and heel side of the rear shape-retention part, respectively. Length 5-30
Creases such as Thomson lines, perforations, slits, etc. are added in the front and back direction of the % to make it bendable, and the folds and both outer sides of the curved part without creases are bent downward to form the back and side parts. The present invention relates to a shape-retaining device for footwear that is characterized by:

Paperboard (white cardboard, kraft cardboard, etc.) is commonly used as the plate-shaped body used in this invention.
Flexible plastic plates, cardboard, etc. can also be used.

In this invention, the cuts in the rear shape-retaining part are made by 5 to 30% of the length of the rear shape-retaining part from both end surfaces on the toe side and heel side, but if the length of the cut is less than 5%, the rear shape-retaining part is bent. When inserted into footwear, the direction of bending is inconsistent, reducing workability. If the length of the cut exceeds 30%, when the rear shape-retaining part is bent, it will be bent to the extent that a clear ridge is formed at the boundary between the back and side parts, and the repulsive force of the plate will be lost, causing the rear shape-retaining part to bend. A gap is created between the side surface of the shape-retaining portion and the side surface of the shoe opening.

[Effect]

The shape-retaining device for footwear of the present invention has creases in the front-rear direction leaving the central part on both sides of the toe side and heel side of the rear shape-retaining part, thereby retaining the resiliency of the plate-shaped body and reducing the repulsion. This improves the fit of the footwear to the side surface of the shoe opening and provides a shape-retaining effect.

〔Example〕

Next, the footwear shape retaining device of the present invention will be explained using the embodiments shown in the drawings. FIG. 1 is a plan view showing an example of the footwear shape retaining device of the present invention in an unfolded state. FIG. 2 is an explanatory diagram of the footwear shape retaining device of FIG. 1 inserted into a shoe. FIG. 3 is a cross-sectional view taken along line A-A' in FIG. 2.

As shown in Fig. 1, a bendable front shape-retaining part 1 made of a plate-like body made of paperboard, plastic board, or corrugated paper.
A rear shape-retaining part 2 that is continuous with the front shape-retaining part 1 and has a length that reaches the heel B of footwear A is integrally formed at the rear end, and the center of the boundary between the front and rear shape-retaining parts 1 and 2 is formed integrally at the rear end. Leave 3 and make notches 4 on both sides. A small hole 5 is bored at the base of this cut 4. In addition, there are Thomson marks and perforations in the front-rear direction of 5 to 30% of the length of the rear shape-retaining part on both sides of the center of the toe side and heel side of the rear shape-retaining part, respectively.
A crease 6 such as a slit is provided to make it bendable.

Further, both outer sides of the fold 6 and the curved portion without a crease are bent downward to form a back portion 7 and side portions 8. The rear end edge of the rear shape retaining part 2 forms the upper rear end edge of the side part 8 and the rear end edge a of the back part 7 in a straight line,
The shape retaining device is configured to ensure engagement and close contact with the heel portion B of the footwear A so that the shape retaining device does not come off, and the lower rear edge b of the side surface portion 8
is formed into a curved shape to facilitate installation into footwear A. The lower edge c of the side part 8 is formed in a straight line and is joined to the upper surface of the bottom of the footwear A so as to maintain strength against pressure from above. The width near the rear end of the back part 7 is formed to be approximately the same as or smaller than the patch or tab sewn to the rear end of the footwear A. 9 is a notch, 10
indicates the upper end of the front shape retaining part 1, and 11 indicates a locking hole for locking a finger during removal.

〔effect〕

The footwear shape-retaining device of the present invention has 5 to 50 mm of the length of the rear shape-retaining part on both sides of the center of the toe side and heel side of the rear shape-retaining part, respectively.
Since it has a 30% crease in the front and back direction, when it is folded, the center part, which does not have a crease, improves fitting to the side of the shoe opening due to the repulsion of the plate-like material, resulting in a shape-retaining effect. Can be done. In addition, since some folds are provided, the folding direction of the rear shape-retaining part can be easily ensured during the actual work of inserting the footwear shape-retaining device into footwear, resulting in good workability.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an example of the footwear shape-retaining device of the present invention in an unfolded state, FIG. 2 is an explanatory diagram of the footwear shape-retaining device of FIG. 1 inserted into a shoe, and FIG. A- in the diagram
4 is a plan view showing the conventional shape-retaining device for footwear in an unfolded state; FIG. 5 is an explanatory view of the shape-retaining device for footwear shown in FIG. 4 inserted into a shoe; 6 is a cross-sectional view taken along line BB' in FIG. 5. A... Footwear, B... Heel part, 1... Front shape resting part,
2... Posterior shape-retaining part, 3... Center of boundary, 4... Notch, 6... Crease, 7... Back, 8... Side part.

Claims (1)

[Scope of utility model registration request] A front shape-retaining part that is bendable and has an appropriate shape such as a semicircular shape, a trapezoidal shape, or a polygonal shape, and a rear shape-retaining part that is continuous to the rear end and has a length that reaches the heel of the footwear are made of a plate-like body. It is formed integrally, leaving the center of the boundary between the front and rear shape-retention parts, making incisions on both sides, and making incisions on both sides of the center of the toe side and heel side of the rear shape-retention part, which are 5 to 5 times the length of the rear shape-retention part, respectively. Creases such as Thomson lines, perforations, slits, etc. are added in the 30% front-to-back direction to make it bendable, and the folds and both outer sides of the curved part without creases are bent downward to form the back and side parts. A shape-retaining device for footwear characterized by forming a shape.